Study on Bose-Einstein condensation of positronium

14th International Workshop on Slow Positron Beam Techniques & Applications

Shu, K.^1 ; Murayoshi, T.^1 ; Fan, X.^1 ; Ishida, A.^1 ; Yamazaki, T.^1 ; Namba, T.^1 ; Asai, S.^1 ; Yoshioka, K.^2 ; Kuwata-Gonokami, M.^1 ; Oshima, N.^3 ; O'Rourke, B.E.^3 ; Suzuki, R.^3

Department of Physics, Graduate School of Science, International Center for Elementary Particle Physics (ICEPP), University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo

113-0033, Japan^1

Photon Science Center (PSC), Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo

113-0033, Japan^2

National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Ibaraki, Tsukuba

305-8568, Japan^3

关键词: Cooling efficiency;    Micro beams;    Slow positron;    Temperature measurement methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/791/1/012007/pdf
DOI  :  10.1088/1742-6596/791/1/012007

来源: IOP

【 摘 要 】

A new method to realize Bose-Einstein condensation (BEC) of positronium (Ps) is proposed and a Monte-Carlo simulation was performed to evaluate the cooling efficiency of Ps atoms. Ps-BEC was found to be possible by a method including laser cooling of Ps. Laser specifications for Ps cooling are challenging and development is ongoing. A new temperature measurement method for cold Ps and development of an intense, pulsed, slow-positron microbeam are also necessary. They are under study as outlined in this contribution.